condition mean min max 4 h after light 1.5597606666666668 0.603982 2.17492 8 h after light 2.049575 0.476345 3.67905 12 h after light 1.6763546666666667 0.986514 2.15867 4 h after dark 2.0784766666666665 1.49064 2.42143 8 h after dark 1.80281 1.0382 2.24116 12 h after dark 1.99709 1.85218 2.18323